Lock-nut.



and

Q flange turned inwardly UNITED STATES PATENT omen.

cnnnnm c. annnnson, or s rxn'sron, mssounr. ock-NUT.

Specification of Letters Patent.

Patented July 18, 1916.

Application med December 7, 1914. Serial m. 875,877

To all whom it may concern:

Be it known that I, CHARLIE ANDER- SON, a citizen of the United States,residin at Sikeston, in the county of Scott tate of Missouri, haveinvented 'certain new and useful Improvements in Look- Nuts; and I. dohereby declare the fol owing to be a full, clear, and exact descri ionof the invention, such as will enable others make and use the same.

This invention has for its object to provide a novel and eflicient locknut including means whereby the nut, when advanced against an object ona bolt, is automatically and reliably locked againstxremoval.

Another object is the provision of a lock nut having an integral objectengaging flange on one face thereof and an annular groove or channel inthe threaded bore thereof into which the object-engaging flange isadapted to be bent as the nut is advanced against the object to locksaid nut against removal.

-With these and other objects in view, 'the invention consists in thenovel construction, arrangement and formation of parts as will behereinafter specifically described, claimed and illustrated in theaccompanying drawing, in which:

Figure 1 represents a front elevation of the object-engaging face of thenut. Fig. 2 represents a side elevation of the nut,

Fig. 3 represents a transverse sectional view through the nut applied toa bolt, and Fig.

4 represents a transverse sectional view skilled in the art to which itappertains to relative tothe bore 6 and in spaced relation to the bolt7. The flange 9 is slit or cut at intervals, as-indicated at 10,110provide a plurality of curved sections, whereby the flange may be morereadily turned inwardly, as will be hereinafter described.

The bore 6 of the nut 5 .is enlarged adja cent the object-engaging face8 thereof to providean annular concentric groove or channel 11, theouter wall 12' of which is flared outwardly toward the object-engagingface of the nut.

In use, the bolt 7 is positioned through the object to be clampe and thenut 5 is advanced thereon by rotation in the usualmanner. As thesections comprising the flan e 9 engage the object 15 and-rotation of te nut. 5 is continued said-flange is turned inwardly and seated in thegroove 11 as illustrated in dotted lines in Fig. 3 and in full lines inFig. 4 and forcibly engages and gri s the threads of the. bolt 7,

thus reliably ocking the nut against rotation upon the bolt. The-corner13 of the flange'9 is preferably rounded so as to assist in turning theflange inwardly into. the groove 11. Y

What I claimis:

1. A lock nut having an internally screwthreaded bore and'an' annulargroove in the wall of said bore adjacent the object-engaging facethereof, and an annular flange formed on the object-engaging 'faceofsaidnut and having agreater internal diameter than the bore of said nutand adapted to be turned inwardly into said groove as the nut isadvanced against an object.

2. A lock nut having an internally screwthreaded bore and ,an annulargroove formed in thewall of said bore adjacent the object-engagingfacethereof, and a flange on the ob ect-engagingface of said nut 'having agreater internal diameter than the diameter of said bore and having theouter comer rounded.

3. A lock nut having'a threaded bore and an annular oove formed in thewall of said bore adjacent the object-engaging face thereof, the wall ofsaid groove being flared memaa outwardly toward the object-engaging faceIn testimony whereof afiix my signature of said nut, and an annularflange formed inpresence oftwo Witnesses.

on the object-engaging face of said nut of greater internal diameterthan the diameter CHARLIE ANDERSON of said bore andadapted to be turnedin- Witnesses:

wardly into said groove as the nut is ad- HARRY C. BLANTON,

vanced against an object. V G. C. MONTGOMERY.

